/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/ViewModels/Stack/NiagaraStackEntry.h
[TOptional](API\Runtime\Core\IO\TOptional)< [FDropRequestResponse](API\Plugins\NiagaraEditor\ViewModels\Stack\UNiagaraStackEntry\FDropRequestResp-) > Drop ( const [FDropRequest](API\Plugins\NiagaraEditor\ViewModels\Stack\UNiagaraStackEntry\FDropRequest) & DropRequest )